I'd say "video game music," but that kind of describes usage more than any specific genre.
Honestly, I don't really care what I listen to. Classic rock is usually good, though there are some weird ones. Classical's okay, whatever the hell they play on most radio stations is usually okay, sometimes I'll run into a rap or hip hop that has a shred of wit in the lyrics that are sort of okay, EDM is sometimes okay when it's not liquidizing my eardrums, ad infinitum.
Anything with an electric guitar is good, end of story.
Seems like most of the stuff on OCRemix is some variety of electronic or another, though I tend to like the ones where you can hear actual instruments better.
Most video game OSTs don't really seem to conform to a single genre. SMG/2 and Elder Scrolls are obviously orchestrated, while Mario Kart and not-chiptune Pokémon seem to get all lumped together in "electronic" a lot, even though they all sound really different.